Function UnInitWindowSystem

src/window.cpp:1881–1890

* Close down the windowing system */

 * Close down the windowing system
 */
void UnInitWindowSystem()
{
	UnshowCriticalError();

	for (Window *w : Window::Iterate()) w->Close();

	Window::DeleteClosedWindows();

	assert(_z_windows.empty());
}

/**
 * Reset the windowing system, by means of shutting it down followed by re-initialization